Video: Man snatches child in Walmart, holds her hostage and then…

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OKLAHOMA CITY (CNN) — Imagine going shopping with your children at a local supermarket and then suddenly having your child plucked right out of the shopping cart and held hostage.

Surveillance video captures a man holding a 2-year-old girl hostage with a knife at grocery store.

That’s exactly what dramatic video of a deadly stand-off shows. It all unfolded in the middle of the day at an Oklahoma City Walmart.

Store surveillance video shows a mom wearing a white shirt shopping with her two daughters; seconds later while the mother’s back is turned, this stranger reaches in and grabs her 2-year-old little girl from the shopping cart. Her stunned 12-year-old sister watches in horror.

The man, Sammie Wallace, hands a cell phone to the girl’s mother and demands she call a police officer he knows in Dallas, Texas, all while holding a knife to the little girl’s stomach, according to police.

Frightened shoppers frantically call 911.

“He took this woman’s kid and we need a police here immediately,” one shopper said.